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ENVIRONMENTAINW. . , Analytical Chemists May 31, 2022 Lab ID : STK2235613-001 Customer ID : 3-17919 San Joaquin Co. Environmental Health Dep Water Quality Division Sampled On : April 22, 2022-08:50 Attn: Steven Shih Sampled By : Francisco Garcia Rui 1868 East Hazelton Ave. Received On : April 22, 2022-09:27 Stockton, CA 95205 Matrix : Drinking Water Description : Wellhead Project : 5433 E. Harney Lane, Lodi, CA 95240 Sample Result-Inorganic Constituent Result PQL Units MCL/AL Sample Preparation Sample Analysis Method Date/ID Method Date/ID General Mineral Total Hardness as CaCO3 91.9 2.5 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Calcium 22 1 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Magnesium 9 1 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Potassium 3 1 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Sodium 16 1 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Total Cations 2.6 --- meq/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Boron ND 0.1 mg/L 200.7 04/25/22:204545 200.7 04/25/22:205903 Copper ND 10 ug/L 10002 200.7 04/25/22:204545 200.7 04/25/22:205903 Iron ND 30 ug/L 3002 200.7 04/25/22:204545 200.7 04/26/22:205971 anganese ND 10 ug/L 502 200.7 04/25/22:204545 200.7 04/25/22:205903 Zinc 480 20 ug/L 200.7 04/25/22:204545 200.7 04/26/22:205971 SAR 0.7 0.1 -- 200.7 04/25/22:204545 200.7 04/26/22:205971 Total Alkalinity(as CaCO3) 90 10 mg/L 2320B 05/04/22:204929 2320B 05/05/22:206425 Hydroxide as OH ND 10 mg/L 2320B 05/04/22:204929 2320B 05/05/22:206425 Carbonate as CO3 ND 10 mg/L 2320B 05/04/22:204929 2320B 05/05/22:206425 Bicarbonate as HCO3 110 10 mg/L 2320B 05/04/22:204929 2320B 05/05/22:206425 Sulfate 10.2 0.5 mg/L 5002 300.0 05/11/22:205176 300.0 05/12/22:206818 Chloride 16 1 mg/L 5002 300.0 05/11/22:205176 300.0 05/12/22:206818 Nitrate as NO3 5.3 0.2 mg/L 45 450ONO3F 04/26/22:204578 450ONO3F 04/26/22:205956 itrite as N ND 0.1 mg/L I 450ONO2B 04/23/22:204595 450ONO2B 04/23/22:205954 Nitrate+Nitrite as N 1.2 0.2 mg/L 10 450ONO3F 04/26/22:204578 450ONO3F 04/26/22:205956 Fluoride 0.1 0.1 mg/L 2 300.0 05/11/22:205176 300.0 05/12/22:206818 Total Anions 2.6 --- meq/L 2320B 05/04/22:204929 2320B 05/05/22:206425 H(Field) 7.5 -- units 4500-H B 04/22/22:204498 4500HB 04/22/22:205836 Specific Conductance 277 1 urnhos/cm 16002 2510E 05/10/22:205128 2510E 05/10/22:206650 Total Dissolved Solids 240 20 mg/L 10002 2540CE 04/26/22:204551 2540C 04/27/22:205985 BAS Extraction ND 0.1 mg/L 0.52 5540C 04/23/22:204511 5540C 04/23/22:205847 Aggressiveness Index 11.2 1 -- 4500-H B 04/22/22:204498 4500HB 04/22/22:205836 angeller Index(20°C) -0.6 1 -- 4500-H B 04/22/22:204498 4500HB 04/22/22:205836 itrate Nitrogen 1.2 0.2 mg/L 10 450ONO3F 04/26/22:204578 450ONO3F 04/26/22:205956 ND=Non-Detected.PQL=Practical Quantitation Limit.*PQL adjusted for dilution. MCL=Maximum Contamination Level.2-Secondary Standard.3-CDPH Notification Level.AL=Regulatory Action Level. Page 3 of 8 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810